The air-popped popcorn, without added toppings provides 63.3g net carbs per 100 g. Calculate the amount you actually use; the reference does not predict an individual ketosis response.
Is Popcorn Keto?

YOUR PORTION
How much are you having?
Scale the published reference values to your portion.
Per 100 g (air-popped popcorn, without added toppings). USDA FoodData Central.
How this is calculated
total carbohydrate - fiber. Each published value is multiplied by your portion divided by the reference amount. No extra fiber, sugar alcohol or allulose deductions are applied here.
Grams and milliliters are not interchangeable. Household measures require a food-specific conversion; check your scale or product label.
63.3gnet carbs in your portion
- Total carbs
- 77.8g
- Fiber
- 14.5g
- Protein
- 12.9g
- Fat
- 4.5g
- Calories
- 387
The reference is already air-popped corn, not raw kernels, oil-popped popcorn, microwave mixtures or coated products. The source cup weighs 8 g.
The calculator scales total carbohydrate and fiber from the same reference.
Check the exact package when the product or preparation differs.
- Net carbs (100 g)63.3g
- Protein (100 g)12.9g
- Fat (100 g)4.5g
- Keto verdictAvoid on keto
NUTRITION FACTS
Per 100 g (air-popped popcorn, without added toppings)
Source: USDA FoodData Central reference record
Source fit: generic reference; variety, brand, or preparation may differ
Net-carb calculation: total carbohydrate - fiber
The saved USDA record, Snacks, popcorn, air-popped, was recorded as accessed July 9, 2026 and reviewed September 6, 2026. Protein, fat and fiber are analytical; energy and carbohydrate are calculated. The reference is already air-popped corn, not raw kernels, oil-popped popcorn, microwave mixtures or coated products. The source cup weighs 8 g.
Nutrition record reviewed 2026-09-06. Maintained by KetoLens Team.
WHY IT'S NOT KETO-FRIENDLY
- The reference contains 63.3g net carbs per 100 g.
- Use the matching preparation and weigh or measure the amount going into your portion.
- Adding fat, protein or a different sweetener does not subtract the carbohydrate already present.
PREPARATION SUGGESTIONS
MEASURE AFTER POPPING
Measure the air-popped corn that will be eaten, keeping it separate from unpopped kernels.
BUILD A SEASONED BOWL
Count butter, oil, cheese, seasoning and sweet coatings separately from the plain popped-corn portion.